public int LayMaMax()
        {
            QLKTX.DataLayer.XepLoaiData data = new XepLoaiData();
            DataTable table = data.LayMaLonNhat();

            try
            {
                int i = Convert.ToInt32(table.Rows[0][0].ToString());
                return(++i);
            }
            catch (Exception e)
            {
                e.ToString();
                return(1);
            }
        }
        public void Sua(QLKTX.BusinessObject.XepLoaiInfo info)
        {
            XepLoaiData data = new XepLoaiData();

            data.Sua(info);
        }